Featured Research

from universities, journals, and other organizations

Bacterial Treatment Gives Cooked Ham A 39 Day Shelf Life

Date:
September 4, 2007
Source:
Society for General Microbiology
Summary:
Cooked ham could soon be given a 39 day shelf life with the help of a coating of protective bacteria. When commercially cured and then meat treated with bacteria as a preservative was tasted by an untrained panel of consumers it was rated as tastier, with a better texture and overall more acceptability than the same conventionally treated ham. Chemical studies showed that the bacteria treated ham was drier and slightly more acidic than the conventionally preserved version of the meat.

Cooked ham could soon be given a 39 day shelf life, according to scientists.

Related Articles


Traditional cooked ham has a maximum shelf life of three to four weeks (21-28 days), including the time from processing to shoppers buying the sliced meat in a supermarket. Currently cooked ham has 55% of the UK cooked meat market, and to maintain and expand this market processors are looking at new technologies to extend shelf life and open up new European markets for pork products.

"Many dairy products such as cheeses and yoghurts and some fermented meat products already use lactic acid producing bacteria to protect and preserve their products, and we know these are acceptable to consumers in terms of taste", says Roisin Lagan from the College of Agriculture, Food & Rural Enterprise in Cookstown, County Tyrone, Northern Ireland. "We investigated the possibility of extending the shelf life of cooked and sliced ham by treating it with a protective culture of Lactobacillus sakei, a common lactic acid producing bacterium."

When the commercially cured and then Lactobacillus treated meat was tasted by an untrained panel of consumers it was rated as tastier, with a better texture and overall more acceptability than the same conventionally treated ham. Chemical studies showed that the bacteria treated ham was drier and slightly more acidic than the conventionally preserved version of the meat.

The food scientists then looked at the shelf life of the new product and found that the lactic acid bacteria culture helped to prevent other types of bacteria from growing on the treated ham, protecting it from possible contamination by food poisoning bacteria or ones which would taint it by destroying its flavour and texture.

"This means that we have found a reliable and cost effective way of developing a tasty ham product with a maximum shelf life of 39 days when stored at 4 C" says Roisin Lagan. "This in turn will allow processors to have longer production runs leading to less wastage, thus reducing the environmental impact of storing and processing food waste. The increased shelf life will allow UK companies to compete more effectively on a global scale. Consumers will be assured a reliable, safe cooked ham product."

Dr Lagan is presenting the poster "Shelf life extension of cooked ham using a bioprotective culture" on 04 September 2007 in the Plenary session of the 161st Meeting of the Society for General Microbiology at the University of Edinburgh, 03 - 06 September 2007.


Story Source:

The above story is based on materials provided by Society for General Microbiology. Note: Materials may be edited for content and length.


Cite This Page:

Society for General Microbiology. "Bacterial Treatment Gives Cooked Ham A 39 Day Shelf Life." ScienceDaily. ScienceDaily, 4 September 2007. <www.sciencedaily.com/releases/2007/09/070903204956.htm>.
Society for General Microbiology. (2007, September 4). Bacterial Treatment Gives Cooked Ham A 39 Day Shelf Life. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2007/09/070903204956.htm
Society for General Microbiology. "Bacterial Treatment Gives Cooked Ham A 39 Day Shelf Life." ScienceDaily. www.sciencedaily.com/releases/2007/09/070903204956.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Aquaponics Turn Suburban Industrial Park Into Farmland: Hume

Aquaponics Turn Suburban Industrial Park Into Farmland: Hume

The Toronto Star (Jan. 27, 2015) Ancient techniques of growing greens with fish and water are well ahead of Toronto bylaws. Video provided by The Toronto Star
Powered by NewsLook.com
How To: Mixed Green Salad Topped With Camembert Cheese

How To: Mixed Green Salad Topped With Camembert Cheese

Rumble (Jan. 26, 2015) Learn how to make a mixed green salad topped with a pan-seared camembert cheese in only a minute! Music: Courtesy of Audio Network. Video provided by Rumble
Powered by NewsLook.com
Water Fleas Prepare for Space Voyage

Water Fleas Prepare for Space Voyage

Reuters - Innovations Video Online (Jan. 26, 2015) Scientists are preparing a group of water fleas for a unique voyage into space. The aquatic crustaceans, known as Daphnia, can be used as a miniature model for biomedical research, and their reproductive and swimming behaviour will be tested for signs of stress while on board the International Space Station. Jim Drury went to meet the team. Video provided by Reuters
Powered by NewsLook.com
Husky Puppy Plays With Ferret

Husky Puppy Plays With Ferret

Rumble (Jan. 26, 2015) It looks like this 2-month-old Husky puppy and the family ferret are going to be the best of friends. Look at how much fun they&apos;re having together! Credit to &apos;Vira&apos;. Video provided by Rumble
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins